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We study infinite dimensional tilting modules over a concealed canonical algebra of domestic or tubular type. In the domestic case, such tilting modules are constructed by using the technique of universal localization, and they can be…

Representation Theory · Mathematics 2019-11-07 Lidia Angeleri Hügel , Dirk Kussin

In this article, we develop a general technique for gluing subcategories of $\infty$-categories. We obtain categorical equivalences between simplicial sets associated to certain multisimplicial sets. Such equivalences can be used to…

Category Theory · Mathematics 2015-06-09 Yifeng Liu , Weizhe Zheng

We discuss the finiteness of (two-term) silting objects. First, we investigate new triangulated categories without silting object. Second, one studies two classes of $\tau$-tilting-finite algebras and give the numbers of their two-term…

Representation Theory · Mathematics 2023-06-22 Takuma Aihara , Takahiro Honma , Kengo Miyamoto , Qi Wang

In this note we give an overview of rigidity properties and Loewy lengths of tilting modules in the BGG category O associated to a reductive Lie algebra. These results are well-known by several specialists, but seem difficult to find in the…

Representation Theory · Mathematics 2017-10-11 Kevin Coulembier

This is an application of the theory of tilting objects to the geometric setting of perverse sheaves. We show that this theory is a natural framework for Beilinson's gluing of perverse sheaves construction. In the special case of Schubert…

Representation Theory · Mathematics 2007-05-23 A. Beilinson , R. Bezrukavnikov , I. Mirkovic

The paper is concerned with cohomology of the small quantum group at a root of unity, and of its upper triangular subalgebra, with coefficients in a tilting module. We relate it to a certain t-structure on the derived category of…

Representation Theory · Mathematics 2007-05-23 Roman Bezrukavnikov

We show that on an arbitrary collection of objects there is a wide variety of higher order architectures governed by hyperstructures. Higher order gluing, local to global processes, fusion of collections, bridges and higher order types are…

Category Theory · Mathematics 2014-10-06 Nils A. Baas

We investigate cluster tilting objects (and subcategories) in triangulated 2-Calabi-Yau categories and related categories. In particular we construct a new class of such categories related to preprojective algebras of non Dynkin quivers…

Representation Theory · Mathematics 2014-01-14 Aslak Bakke Buan , Osamu Iyama , Idun Reiten , Jeanne Scott

Let T be a locally finite triangulated category with an autoequivalence F such that the orbit category T/F is triangulated. We show that if X is an m-cluster tilting subcategory, then the image of X in T/F is an m-cluster tilting…

Representation Theory · Mathematics 2016-01-05 Benedikte Grimeland

In this paper, we study the relationship of Gorenstein projective objects among three Abelian categories in a recollement. As an application, we introduce the relation of $n$-Gorenstein tilting modules (and Gorenstein syzygy modules) in…

Category Theory · Mathematics 2022-05-20 Peiyu Zhang , Qianqian Shu , Dajun Liu

It is well known that the relation-extensions of tilted algebras are cluster-tilted algebras. In this paper, we extend the result to silted algebras and prove some extension of silted algebras are cluster-tilted algebras.

Representation Theory · Mathematics 2020-05-19 Hanpeng Gao

We introduce and study the new concepts of cosilting complexes, cosilting modules and AIR-cotilting modules. We prove that the three concepts AIR-cotilting modules, cosilting modules and quasi-cotilting modules coincide with each other, in…

Rings and Algebras · Mathematics 2016-01-08 Peiyu Zhang , Jiaqun Wei

We show that the category of projective modules over a graded commutative ring admits a triangulation with respect to module suspension if and only if the ring is a finite product of graded fields and exterior algebras on one generator over…

Commutative Algebra · Mathematics 2007-05-23 Mark Hovey , Keir H. Lockridge

An abelian category with arbitrary coproducts and a small projective generator is equivalent to a module category \cite{Mit}. A tilting object in a abelian category is a natural generalization of a small projective generator. Moreover, any…

Category Theory · Mathematics 2010-11-25 Riccardo Colpi , Francesca Mantese , Alberto Tonolo

In this paper, we study a close relationship between relative cluster tilting theory in extriangulated categories and tau-tilting theory in module categories. Our main results show that relative rigid objects are in bijection with…

Representation Theory · Mathematics 2021-11-15 Yu Liu , Panyue Zhou

We introduce a notion of gluability for poset-indexed Bridgeland slicings on triangulated categories and show how a gluing abelian slicing on the heart of a bounded $t$-structure naturally induces a family of perverse $t$-structures. Our…

Category Theory · Mathematics 2018-06-05 Giovanni Luca Marchetti , Domenico Fiorenza

We study the cluster categories arising from marked surfaces (with punctures and non-empty boundaries). By constructing skewed-gentle algebras, we show that there is a bijection between tagged curves and string objects. Applications include…

Representation Theory · Mathematics 2019-02-20 Yu Qiu , Yu Zhou

We give a new characterization of silting subcategories in the stable category of a Frobenius extriangulated category, generalizing the result of Di et al. (J. Algebra 525 (2019) 42-63) about the Auslander-Reiten type correspondence for…

Rings and Algebras · Mathematics 2023-05-02 Yajun Ma , Nanqing Ding , Yafeng Zhang , Jiangsheng Hu

Let T be a tilting module.In this paper, some relative Gorenstein projective and Gortenstein injective modules are studied.

Commutative Algebra · Mathematics 2019-06-05 M. Amini

In this paper we study the category of graded modules for the current algebra associated to $\mathfrak{sl}_2$. The category enjoys many nice properties, including a tilting theory which was established in previous work of the authors. We…

Representation Theory · Mathematics 2015-04-02 Matthew Bennett , Vyjayanthi Chari
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